CVE-2025-68747 (GCVE-0-2025-68747)

Vulnerability from cvelistv5 – Published: 2025-12-24 12:09 – Updated: 2026-08-05 12:11
VLAI
Title
drm/panthor: Fix UAF on kernel BO VA nodes
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/panthor: Fix UAF on kernel BO VA nodes If the MMU is down, panthor_vm_unmap_range() might return an error. We expect the page table to be updated still, and if the MMU is blocked, the rest of the GPU should be blocked too, so no risk of accessing physical memory returned to the system (which the current code doesn't cover for anyway). Proceed with the rest of the cleanup instead of bailing out and leaving the va_node inserted in the drm_mm, which leads to UAF when other adjacent nodes are removed from the drm_mm tree.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7033 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 8a1cc07578bf42d85f008316873d710ff684dd29 , < 5a0060ddfc1fcfdb0f7b4fa1b7b3b0c436151391 (git)
Affected: 8a1cc07578bf42d85f008316873d710ff684dd29 , < 1123eadb843588b361c96f53a771202b7953154f (git)
Affected: 8a1cc07578bf42d85f008316873d710ff684dd29 , < 0612704b6f6ddf2ae223019c52148c5ac76cf70e (git)
Affected: 8a1cc07578bf42d85f008316873d710ff684dd29 , < 98dd5143447af0ee33551776d8b2560c35d0bc4a (git)
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Linux Linux Affected: 6.10
Unaffected: 0 , < 6.10 (semver)
Unaffected: 6.12.63 , ≤ 6.12.* (semver)
Unaffected: 6.17.13 , ≤ 6.17.* (semver)
Unaffected: 6.18.2 , ≤ 6.18.* (semver)
Unaffected: 6.19 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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{
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/panthor/panthor_gem.c"
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          "vendor": "Linux",
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          "vendor": "Linux",
          "versions": [
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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              "versionType": "semver"
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                  "versionStartIncluding": "6.10",
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/panthor: Fix UAF on kernel BO VA nodes\n\nIf the MMU is down, panthor_vm_unmap_range() might return an error.\nWe expect the page table to be updated still, and if the MMU is blocked,\nthe rest of the GPU should be blocked too, so no risk of accessing\nphysical memory returned to the system (which the current code doesn\u0027t\ncover for anyway).\n\nProceed with the rest of the cleanup instead of bailing out and leaving\nthe va_node inserted in the drm_mm, which leads to UAF when other\nadjacent nodes are removed from the drm_mm tree."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
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              "lang": "en",
              "value": "AV:L - The vulnerability is reached locally through Panthor DRM render-node ioctls that create, submit work to, and destroy GPU VMs and tiler heaps.\nAC:L - The attacker controls adjacent kernel-BO allocations, can submit GPU command streams that block the memory subsystem, and can trigger teardown after reset; no uncontrollable race is required.\nPR:L - All necessary ioctls are marked DRM_RENDER_ALLOW and normal priorities require no capability, DRM master status, or namespace privilege.\nUI:N - Exploitation requires no action by another user after the attacker obtains ordinary render-node access.\nS:U - The corruption occurs within the host kernel and represents conventional local privilege escalation rather than crossing a separate virtualization or IOMMU security authority.\nC:H - The freed drm_mm node can be reclaimed with attacker-influenced contents, enabling kernel-memory access and potential arbitrary disclosure as part of exploitation.\nI:H - Removing an adjacent node performs linked-list and red-black-tree operations through the freed object, providing exploitable kernel writes and potential control-flow hijacking.\nA:H - The stale allocator metadata can cause a kernel oops, panic, or unrecoverable allocator corruption."
            }
          ]
        }
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      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:11:16.791Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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          "url": "https://git.kernel.org/stable/c/5a0060ddfc1fcfdb0f7b4fa1b7b3b0c436151391"
        },
        {
          "url": "https://git.kernel.org/stable/c/1123eadb843588b361c96f53a771202b7953154f"
        },
        {
          "url": "https://git.kernel.org/stable/c/0612704b6f6ddf2ae223019c52148c5ac76cf70e"
        },
        {
          "url": "https://git.kernel.org/stable/c/98dd5143447af0ee33551776d8b2560c35d0bc4a"
        }
      ],
      "title": "drm/panthor: Fix UAF on kernel BO VA nodes",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2025-68747",
    "datePublished": "2025-12-24T12:09:42.925Z",
    "dateReserved": "2025-12-24T10:30:51.031Z",
    "dateUpdated": "2026-08-05T12:11:16.791Z",
    "state": "PUBLISHED"
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/panthor: Fix UAF on kernel BO VA nodes\n\nIf the MMU is down, panthor_vm_unmap_range() might return an error.\nWe expect the page table to be updated still, and if the MMU is blocked,\nthe rest of the GPU should be blocked too, so no risk of accessing\nphysical memory returned to the system (which the current code doesn\u0027t\ncover for anyway).\n\nProceed with the rest of the cleanup instead of bailing out and leaving\nthe va_node inserted in the drm_mm, which leads to UAF when other\nadjacent nodes are removed from the drm_mm tree."
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\ndrm/panthor: Soluciona UAF en nodos VA de BO del kernel\n\nSi la MMU est\u00e1 inactiva, panthor_vm_unmap_range() podr\u00eda devolver un error.\nEsperamos que la tabla de p\u00e1ginas se actualice a\u00fan, y si la MMU est\u00e1 bloqueada,\nel resto de la GPU tambi\u00e9n deber\u00eda estar bloqueado, por lo que no hay riesgo de acceder a\nmemoria f\u00edsica devuelta al sistema (lo cual el c\u00f3digo actual no cubre de todos modos).\n\nContinuar con el resto de la limpieza en lugar de abortar y dejar\nel va_node insertado en el drm_mm, lo que lleva a UAF cuando otros\nnodos adyacentes son eliminados del \u00e1rbol drm_mm."
          }
        ],
        "id": "CVE-2025-68747",
        "lastModified": "2026-10-13T10:10:00.193",
        "metrics": {
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                "attackVector": "LOCAL",
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                "baseScore": 7.8,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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              "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Deferred"
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2026-08-20T12:43:48+00:00",
      "cve": "CVE-2025-68747",
      "id": "CVE-2025-68747",
      "initial_release_date": "2025-12-24T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: Linux kernel: drm/panthor Use-After-Free vulnerability",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-68747.json",
      "version": "3"
    }
  }
}



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